Silicon NPN Power Transistor Wafer
Unmounted silicon wafer containing thousands of NPN bipolar junction transistor dice, used in power amplification circuits for automotive and industrial applications. Classified under HTS 8541.29.00.40 as unmounted chips, dice, and wafers of transistors other than photosensitive types. These are raw semiconductor substrates prior to dicing and packaging.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If photosensitive transistors
Photosensitive transistors (e.g., phototransistors for light detection) fall under 8541.21 as they respond to light stimuli.
If processed into mounted integrated circuits
Once diced, mounted, and encapsulated, these become semiconductor devices like integrated circuits under heading 8542.
If imported as doped semiconductor materials without defined transistor structures
Unprocessed doped wafers without fabricated transistor patterns are chemical preparations under 3818.
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Import Tips & Compliance
• Provide detailed wafer specifications including diameter, doping levels, and resistivity to avoid misclassification as finished devices
• Include certificates of origin and material composition analysis to qualify for preferential tariff treatment under trade agreements
• Use anti-static, vacuum-sealed packaging to prevent damage; declare as 'unmounted wafers' explicitly on commercial invoice
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